user
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Find all elements with the class "box" in the given html section, and remove them. Output the entire html section without the class "box" boxes.

### Input:
<div class="header">
    <div class="box">
        <h1>Header</h1>
    </div>
    <div class="box">
        <h2>Sub-header</h2>
    </div>
</div>

### Response:
assistant
<div class="header">
    <h1>Header</h1>
    <h2>Sub-header</h2>
</div>